PERMIAN MAGMATISM IN THE NORTHERN MOJAVE REGION AND CONSTRAINTS ON THE TIMING AND TECTONICS OF SUBDUCTION INITIATION ALONG THE SOUTHWEST LAURENTIAN MARGIN

2017 ◽  
Author(s):  
M. Robinson Cecil ◽  
◽  
Mary Ann Ferrer ◽  
Nancy R. Riggs ◽  
Kathleen Marsaglia
Keyword(s):  
Subduction Initiation ◽  
Laurentian Margin

MANTLE DEFORMATION RECORDING SUBDUCTION INITIATION, RED HILLS, NEW ZEALAND

2017 ◽  
Author(s):  
Julie Newman ◽  
◽  
Eric D. Stewart ◽  
Basil Tikoff ◽  
Brent Miller ◽  
...  
Keyword(s):  
New Zealand ◽  
Subduction Initiation ◽  
Red Hills

SUBDUCTION INITIATION IN NATURE AND MODELS

2019 ◽  
Author(s):  
Robert J. Stern ◽  
◽  
Taras Gerya ◽  
Taras Gerya
Keyword(s):  
Subduction Initiation

Terrane provenance and amalgamation: examples from the Caledonides

1990 ◽  
Vol 331 (1620) ◽  
pp. 599-609 ◽  
Keyword(s):  
Sedimentary Basins ◽  
Fault Zones ◽  
River Systems ◽  
Pan African ◽  
Basin Formation ◽  
Laurentian Margin

The Scottish Caledonides have grown by the accretion of terranes generated somewhere along the Laurentian margin. By the time these terranes had been emplaced along the Scottish sector, they were structurally truncated then reassembled to form an incomplete collage of indirectly related tectonic elements of a destructive margin. The basement to some of these tectonic elements and the basement blocks belonging to the previously accreted Precambrian are of uncertain provenance and a source in the Pan-African craton is possible. As terranes migrate along the orogen they generate in the fault zones and on their periphery a reservoir of mature sediment. This mature sediment is produced because of the recycling produced during the generation and destruction of sedimentary basins developing during terrane translation. At each period of recycling the mature sediments are mixed with less mature sediments yielded from local uplifts generated by the new basin formation. If a large part of the orogen suffers orthogonal closure, giant river systems may form and disperse sediment across terranes. This is likely to have happened during the Devonian-Carboniferous of parts of N. Europe.

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